Shuttle-check for looms



N. BOISVERT. SHUTTLE 011501; FOR LOOMS.

(No Model.)

Patented June 25, 1889.

u PEIERS. Pholo-Lnhngrapher Wnhingian. o. c.

UNITED STATES PATENT OFFICE.

NAPOLEON BOISVERT, OF SALMON FALLS, NEIV HAMPSHIRE, ASSIGNOR OF THREE-FOURTHS TO JAMES HAMILTON AND HERBERT E. HAMILTON, BOTH OF SAME PLACE, AND ED\VARI) M. HALL, OF GREAT FALLS, NEW

HAMPSHIRE.

SHUTTLE-"CHECK FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 405,980, dated June 25, 1889.

Application filed March 2 3, l 8 8 9.

To all whom it may cancer/L.-

Be it known that I, NAPOLEON BOISVERT, a citizen of the United States, and aresident of Salmon Falls, in the county of Straiford and State of New Hampshire, have invented certain new and useful Improvements in ShuttleChecks for Looms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in shuttle-checks for looms; and it has for its object to simplify and cheapen the intermediate connections between the swell of the shuttle-box and the pitman that connects the lay and crank-shaft, whereby the swell is released from the shuttle when the latter leaves its box to insure a smooth easy movement to the shuttle,which relieves all undue strain on the filling as well 011 the pick-motion and picker-staff, and causes less breakage of the warp-threads IVith these ends in view my invention 0011- sists in the combination,with a pitman intermediate of the lay and crank-shaft, a rockshaft carrying a binder arm or finger, a swell, and a spring connect-ed to said rock-shaft, of a vertically-reciprocating rod connected at its lower end to said spring and bent laterally of the lay-sword on which it is guided, said rod being connected at its upper extremity to the lay-pitman. This connecting-rod is reeiprocated vertically by the up-and-down play of the lay-pitman, and when the crankshaft is 011 the downstrokc or center this red pulls downward on the spring,which thereby distends the latter and causes it to pull on the rock-shaft and force the binder arm or finger carried by said protection-rod against the swell, which bears on the shuttle with the desired pressure; but when the crank-shaft approaches the top center, said connectingrod is raised to release the spring and the swell from the shuttle, which permits the latter to leave its box with ease.

My invention further consists in the peculiar details of construction and arrangement Serial No. 304,490. (No model.)

of parts, as will. be hereinafter fully de scribed.

In the accompanying drawings, Figure 1 is a side elevation of my improved shuttle-check, showing the position of the parts when the crank is on the down center. Fig. 2 is a like view with the crank on the top center and the parts in reverse positions. Fig. 3 is a de tached view of the parts.

Like numerals of reference denote corresponding parts in all the figures of the drawings, referring to which, 1 designates the crankshaft; 2, the lay; 3, the pitman inter mediate of the lay and crankshaft; i, one of the swords on which the lay is carried; 5,the swell of the shuttlebox; and 7, a rock-shaft on which is fixed an arm or finger 8, arranged to impinge againstthe swell 5. All of these parts are common to the ordinary well-known types of looms, and no novelty thereon is claimed in this application.

To one of the lateral faces of the lay-pit man 3, at an intermediate point of its length, is applied an elongated horizontal bracket 10, which has right-angled feet, through which bolts or other suitable devices are passed to secure the bracket in a fixed position on said pitman. This fixed bracket is provided with a horizontal longitudinal slot 11, through which passes a pivot-bolt 11, on which is pivoted the upper extremity of a vertically-re ciprocatin g rod 12. This rod is made of a sin- 8o glc piece of inctalpreferably a stout piece of wire-and is bent at an intermediatc point of its length to form the straight vertical por- I tion and alaterally-inclined portion, as shown, whereby the inclined upper end of said rod is adapted to be connected in the manner de scribed with the lay-pitman, while its lower straight end is arranged in a fixed guide on the lay-sword to belimited to movement in a vertical plane.

From the arm 8 of the rock-shaft 7 depends a vertical coiled spring 13, the lower extremity of which is near the fixed guide 14 for the lower straight end of the vertically-recipro cating rod. '3clow the fixed guide the vertical]y-reciprocating rod is bent into a foot 15 to adapt the same to be readily connected to the spring, and between the extremities of said spring, the arm 8 of the rock-shaft, and the bent foot of the reciprocating rod are arranged wear-strips 16 16', preferably of leather, to take the wear between said parts.

The .fixed guide 14: preferably consists of an'eyebolt which is suitably fixed to the laysword; but I would have it understood that I do not wish to confine myself to this exact form of guide, nor to the connecting wearstraps at the ends of the spring, nor to the exact connection between the reciprocating rod and spring, as I am aware that changes' in these and minor other details of construction can be made without departing from the spirit of my invention.

The operation of my invention is obvious. When the crank is on or approaching the down center, as indicated in Fig. 1, the reciprocating-rod is depressed by the lay-pitman, and thus draws down on the coiled spring, which acts to turn the rock-shaft and thus press the binder arm or finger against the swell, which in turn binds on the shuttle. When the crank approaches the top center, (see Fig. 2,) the reciprocating rod is elevated to release the pull of the coiled spring on the rock-shaft, which allows the binder arm or finger to relieve the pressure of the swell on the shuttle, thereby allowing the shuttle to leave its box with an easy motion. This action of the parts cases on the filling, relieves the pick-motion and picker-staff of undue strain, and causes less breakage of the warp-threads.

It is obvious that the point of connection between the reciprocating rod and lay-pitman can be varied by moving the pivot-bolt toward or from the crank-shaft, so as to vary the length of reciprocating vertical play or movement of the rod, and thus vary the pressure of the swell on the shuttle.

Having thus described my invention, whatl and combined for operation in the manner and for the purpose specified.

2. The combination, with a lay, a crankshaft, a lay-pitman, a swell, a rock-shaft carrying a binder arm or finger, and a spring connected to said rock-shaft, of a vertically-reciprocating rod connected at its lower end to said spring, and adj ustably connected by means, substantially as described, to the laypitman to vary its vertical movement or play, and a guide in which said reciprocating rod is fitted, combined and arranged for operation substantially as and for the purpose described.

3. The combination, with a lay, a crankshaft, a lay-pitman, a swell, a rock-shaft carrying a binder-arm, and a spring connected to the rock-shaft, of a slotted bracket applied laterally to the lay-pitman, a vertically-reciprocating rod connected at its lower end to the spring and having a laterally-bent portion pivoted on a bolt which is adjustably secured in the slotted bracket, and a fixed guide in which the lower straight end of said rod is fitted, substantially as and for the purpose described. 7

In testimony whereof I aflix my signature in presence of two Witnesses.

NAPOLEON BOISVERT.

WVitnesses:

HERBERT E. HAMILTON, JAMEs HAMILTON. 

